function centermainlayer() {
	var mainstyle=document.getElementById("mainlayer").style;
	newleft=Math.abs(document.body.clientWidth/2)-Math.round(layerWidth/2)-layerOffset;
	if (newleft>0) {
		mainstyle.left=newleft+"px";
	}
//	newtop=25;
//	mainstyle.top=newtop+"px";
}
layerWidth=994;
layerOffset=6;
window.onresize=centermainlayer;